/// <summary>
/// Validates input lastName. If unsuccessful, shows the corresponding errorLabel
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void lastNameTextBox_Validating(object sender, CancelEventArgs e)
{
if (lastNameTextBox.Text.Length < 1)
{
lastNameErrorLabel.Text = "Required";
lastNameErrorLabel.Visible = true;
lastNameTextBox.BackColor = SystemColors.Control;
return;
}
if (handler.IsValidLastName(lastNameTextBox.Text))
{
lastNameErrorLabel.Visible = false;
lastNameTextBox.BackColor = SystemColors.Window;
}
else
{
lastNameErrorLabel.Visible = true;
lastNameErrorLabel.Text = "Invalid Last name, only letters please";
lastNameTextBox.BackColor = SystemColors.Control;
}
}